Switch plug



Oct. 30, 1928.

W. J. wlsE ET Al.

SWITCH PLUG Filed Jan. 19. 1922 and 7205206 dAda/IIJ l 55513 gli mommy Patented oct. 3o, 192s.

UNITED STATES i 1,689,1u1v v[Paritair Ormes.

WILLIAM J. WISE AND' THOMAS O. ADAMS, OF NEW PHILADELPIIIA, OHIO, ASSIGNORS,

BY MESNE ASSIGNMENTS, TO WISE-MCCLUNG CORPORATION, OF NEW' PHILADEL- PHIA, OHIO, A CORPORATION OF OHIO.

s'wrrcn PLUG.

'Application filed January 19, 1922. Serial No. 530,293.

This invention relates to suction cleaners and more particularly to a switch plug for connecting the electric supply wires with the motor of the suction cleaner.

The objects of the invention are to provide a switch plug of this character formed of two separable parts, one part being tired to the casing of the motor and being provided with two terminals connected with opposite sides of the motor, the other or removable part being provided with two sockets to receive said terminals, the electric supply wires being connected to said sockets, the plug being so formed that the removable portion of the plug will be normally held in engagement with the stationary portion thereof, but so arranged that the removable portion may be easily detached from or attached to the stationary portion of the plug.

With these objects in view, the invention consists in the construction and arrangement of parts,lhereinafter described and illusy trated in the accompanying drawings, it being understood that various changes in the form and details of contruction may be made within the scope of the appended claim.

A preferred embodiment of the invention thus set forth in general terms is illustrated in the accompanying drawings, in which Figure 1 is aside elevation of a suction cleaner having the improved switch plug attached thereto, the motor casing being shown in section to illustrate the invention;

Fig. 2, a front elevation of the switch plug, parts being broken away for the purpose of illustration;

Fig. 3, a section on the line 3 3, Fig. 2';

Fig. 4, a section on the line i- 4, Fig. 2; and

Fig, a perspective View of the several parts of the switch plug separated from each other. l

Similar numerals of reference indicate corresponding parts throughout the several figures of the drawing In carrying out the invention, the motor casing 1, motor 2, fan and fan chamber 3 and 4 respectively, nozzle 5, wheels 6 and handle bail 7 may be of any usual and well known construction of either the horizontal motor type of vacuum cleaner as shown in the drawing, or of the usual vertical motor type.

The body of each portion of the plug is made of hard rubber or other suitable insulating material, the metal parts being cast therein as will be hereinafter described. The stationary portion of the plug comprises the insulated block 8 having theV reduced flange 9 at its lower end through which a screw 10 or the like may be passed, attach ing the same to the motor casing, a longer screw being also preferably located through the central portion thereof and into the motor casing.

The terminal pins 12 are cast in opposite cnd portions of the stationary block 8, each of said pins being provided with the bifurcated reduced contact portionl?) extending above the upper surface of the block and with the internally threaded lower portion block as shown at 14 to receive the binding 7o extending through the lower portion of the screw 15 by means of which the wires 16 leading from the motor thereto.

The removable portion of the switch plug comprises the block 17 formed of suitable are connected insulating material and covered by the block lyi also formed of insulating material and connected thereto as by the screw 19, the head of which is received in a socket 20'in the portion 13, said. screw extending through a bore 21 in the block 17 and engaging the nut 22 which is cast in said block.

The terminal bushings 23 are cast in the block 17 in alignment with the terminal pins y of the lower block, said bushings extending entirely through the block 17 and being pro-` vided with the internal screw threads 24 at their extremities which receive the binding screws 25 by means of which the wires 26 leading from the source of electric supply are connected to the upper or removable block.

The wires 26 are carried in a cable 27 in the usual manner and extend through the socket 28 formed in the blocks 17 and 18,

the oppositely disposed sockets 29 communifixed insulated bloel aud a movable insulated block, means for attaching' the fixed i11- sulated bleek to a support, terminal pins molded in the fixed block and extending eu- 5 tirely through the same, a binding screw at one end of eaeh terminal pin, a reduced, bil'ureated shank at the opposite end oi' each terminal pin, terminal bushings molded Within tlie movable block and arranged to receive 10 said bi'fureated Shanks and binding screws located at the opposite extremities of the terminal bushings, an insulated Cover Ylor the In testimony that We claim the above, we 20 have hereunto subscribed our names.

WILLIAM J. WISE. TIIoMAs o. ADAMS. 

